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Index / Search / Eleocharis obtusa

§1 Plant

Eleocharis obtusa (Willd.) Schult.

vernacular blunt spikerush — species · Cyperaceae

USDA
ELOB2
GBIF
2717467
Rank
species
blunt spikerush (Eleocharis obtusa)
Platephotograph · Tim LewisCC BY-NC source · iNaturalist ↗

§2Habit & range

Habit and range

Growth habit
Graminoid
Duration
Annual, Perennial
Group
Monocot
Family
Cyperaceae Juss.
Genus
Eleocharis
§2a

Native status, by region

  • CAN Canada Native
  • HI Hawaii Native
  • L48 Lower 48 States Native
§2b

County-level range

· 1,310 counties across 39 states/territories
Legend Native · 1310 Introduced · 0 Both · 0 Hover a county for detail.

§3Cultivation specs · USDA

Recorded by the USDA Plant Materials Program.

§3a

Tolerances

Drought
Low
Shade
High
Moisture use
Medium
Fire
Medium
Salinity
None
Anaerobic
Medium
CaCO₃
Medium
Hedging
None
§3b

Climate & soil

Cold tolerance
37 °F minimum
Frost-free days
120 min.
Precipitation
18–60 in/yr
pH range
4.1–8.7
Root depth
10 in min.
Fertility need
Medium
Soil texture
coarse, medium, fine
§3c

Form & growth

Growth form
Rhizomatous
Growth rate
Moderate
Lifespan
Short
Mature height
1.6 ft
Foliage texture
Fine
Foliage colour
Dark Green
Porosity (summer)
Moderate
Porosity (winter)
Porous
Flower colour
Yellow
Fruit colour
Brown
Fire resistant
Yes
N fixation
None
Toxicity
None
§3d

Reproduction

Bloom period
Summer
Seed abundance
Medium
Seed begins
Spring
Seed ends
Fall
Spread rate
Moderate
Stratify
No
Seeds / lb
2,834,953
Propagation
seed, bare root, sprigs
§3e

Use & availability

Commercial availability
Routinely Available
Nursery stock
No
Graze palatability
Low
Palatable, human
No
Lumber
No
Christmas tree
No

§4Counties, by state

Recorded in 1,310 counties across 39 states/territories.

Alabama view state ↗ 39 N ▾
Arkansas view state ↗ 51 N ▾
California view state ↗ 15 N ▾
Colorado view state ↗ 2 N ▾
Delaware view state ↗ 2 N ▾
District of Columbia view state ↗ 1 N ▾
Florida view state ↗ 12 N ▾
Georgia view state ↗ 34 N ▾
Hawaii view state ↗ 4 N ▾
Idaho view state ↗ 3 N ▾
Illinois view state ↗ 77 N ▾
Indiana view state ↗ 77 N ▾
Iowa view state ↗ 3 N ▾
Kansas view state ↗ 1 N ▾
Kentucky view state ↗ 94 N ▾
Louisiana view state ↗ 56 N ▾
Maryland view state ↗ 2 N ▾
Massachusetts view state ↗ 14 N ▾
Michigan view state ↗ 47 N ▾
Minnesota view state ↗ 2 N ▾
Mississippi view state ↗ 38 N ▾
Missouri view state ↗ 58 N ▾
Nevada view state ↗ 1 N ▾
New Jersey view state ↗ 13 N ▾
New Mexico view state ↗ 1 N ▾
New York view state ↗ 54 N ▾
North Carolina view state ↗ 91 N ▾
Ohio view state ↗ 60 N ▾
Oklahoma view state ↗ 1 N ▾
Oregon view state ↗ 15 N ▾
Pennsylvania view state ↗ 67 N ▾
South Carolina view state ↗ 34 N ▾
Tennessee view state ↗ 69 N ▾
Texas view state ↗ 55 N ▾
Vermont view state ↗ 3 N ▾
Virginia view state ↗ 97 N ▾
Washington view state ↗ 16 N ▾
West Virginia view state ↗ 44 N ▾
Wisconsin view state ↗ 57 N ▾

§5Sources & provenance

USDA PLANTS

Symbol, taxonomy, distribution, cultivation specs, native status. Public domain.

plants.usda.gov/ELOB2 ↗

GBIF Backbone

Canonical taxonomic identity, synonym resolution, cross-refs. CC0.

gbif.org/species/2717467 ↗

Record version

Cached and built locally. Source version on this record:

usda-plants-mt-2026-05-26

fetched 2026-05-26T20:46:58Z